Hi BigH,
First of a question, why do you want to use a wet&dry
filter and a canister filter when you have live rock ? both these
filters are good for fresh water but not very suitable for salt water
they are nitrate factorys, nitrates are tolerable in fresh water but
not very good in salt water tanks and bad in reef tanks. the best
filtration you can have in a salt water tank is live rock (1 to 2lbs
per gallon) plus a DSB (deep sand bed 4" to 6") plus a good protein
skimmer and plenty of flow (about 20 times the tank volume per hour or
more for a reef tank) that is all you need. A sump is a good thing to
increase your water volume which makes for a more stable system, but
will not full fill your prime reason more fish, it does not increase
the volume of your display tank which is what determines your fish
population. Power heads are required in your tank to create the
necessary flow. If you use a 600g/hr overflow your return pump must
have a flow of about 550g/hr or so at that head if you want to keep
your water of the floor and in your tank, I would go for the biggest
overflow you can. Most web sites selling pumps will have a table
showing the flow rates at different heads for each pump. good luck.
regards,
unclenorm.